First stable release 1.0.0

As I have used this for some time now without any issues, I feel it is time to promote this release to a stable semver.org version.

The main thing that has happened in the code base is that I have added a blanket implementation of the ReadWrite trait, which means that third party crates can be created that provides different transport mechanisms to the ssh-agent as long as the connection implements the standard Read and Write traits.

I have also added support for Windows in this release, along with Unix like operating systems, tested on Linux and MacOS